Three Vouchers & Cashback 2021

Updated May 10, 2021
Getting the best mobile, broadband and SIM plan for your home and handsets is easy with Three! Browse our Three vouchers and Three discount codes for extra savings.
Cashback Rates
£66 cashback
for the unlimited data 12 month SIM plan for £18 per month
2 uses today
£71.50 cashback
for contract handset on-site offers
1 use today
£77 cashback
for Huawei AI Cube with unlimited data on a 24 month contract for £25 per month
£55 cashback
for mobile broadband SIM 24 month plans with 2GB, 5GB, or 10GB of data
£55 cashback
for mobile broadband SIM 12 month plans with 1GB - 20GB of data
£16.50 cashback
for mobile broadband SIM 1 month plans with 2GB - 100GB of data
£66 cashback
for Huawei B535 mobile broadband device with unlimited data, 24 month contract for £22 per month
£77 cashback
for Huawei AI Cube with unlimited data on a 12 month contract for £32 per month and £49 upfront
£66 cashback
for Huawei B535 mobile broadband device with unlimited data, 12 month contract for £27 per month and £29 upfront
£16.50 cashback
for Pay As You Go Handsets
£33 cashback
for 12GB for £8 12 month SIM plan
£33 cashback
for the 8GB data 12 month SIM plan for £8 per month
£22 cashback
for the 1GB data 12 month SIM plan for £5 per month
£27.50 cashback
for 4GB for £6 12 month SIM plan
£66 cashback
for the 30GB data 12 month SIM plan for £15 per month
£16.50 cashback
for the unlimited 1 month SIM plan for £24 per month
£74.25 cashback
iPhone 12 mini 100GB data, £19 upfront cost and £42 monthly
£74.25 cashback
iPhone 12 100GB data, £29 upfront cost and £45 monthly
£74.25 cashback
iPhone 12 Pro 100GB data, £49 upfront cost and £55 monthly
£74.25 cashback
iPhone 12 Pro Max with 100GB data, £79 upfront cost and £59 monthly
£74.25 cashback
for Samsung Galaxy S20, 100GB data, £29 upfront cost and £32 monthly
£74.25 cashback
for Samsung Galaxy S20, 100GB data, £29 upfront cost and £38 monthly
£74.25 cashback
for Samsung Galaxy S20 5G, 100GB data, £29 upfront cost with £36 monthly
£74.25 cashback
for Samsung Galaxy S20+ 5G, 100GB data, £49 upfront cost and £43 monthly
£74.25 cashback
for Samsung Galaxy A51, 100GB data, £19 upfront cost and £23 monthly
£74.25 cashback
for Apple iPhone SE, 30GB data, £19 upfront cost and £29 monthly
£74.25 cashback
for Samsung Galaxy A71, 100GB data, £29 upfront cost and £27 monthly
£74.25 cashback
for Huawei P30 Pro, 100GB data, £29 upfront cost and £29 monthly
£74.25 cashback
for Apple iPhone 11 Pro, 100GB data, £49 upfront cost and £49 monthly
£74.25 cashback
for Apple iPhone SE, 100GB data, £29 upfront cost and £29 monthly
£74.25 cashback
for OnePlus 8, 100GB data, £29 upfront cost and £39 monthly
£74.25 cashback
for OnePlus 8 Pro, 100GB data, £39 upfront cost and £49 monthly
£74.25 cashback
for OnePlus Nord, 100GB data, £29 upfront cost and £34 monthly
£55 cashback
for Apple iPad 7th Generation, 100GB data, 24 month contract for £39 per month with £49 upfront cost
£55 cashback
for Samsung Galaxy Tab A 10.1 2019, 100GB data, 24 month contract for £27 per month
£66 cashback
for the Huawei 4G Mobile WiFi with unlimited data for £22 per month
£55 cashback
for Huawei E5573bs-322 4G Mobile Wi-Fi, 40GB data, 24 month contract for £13 per month
£55 cashback
for Huawei MediaPad T5, 100GB data, 24 month contract for £25 per month
£55 cashback
for Apple iPad Pro 11, 40GB data, 24 month contract for £48 per month with £49 upfront cost

£80
OFF
3 uses today

Up to £80 off in cash rewards when you refer a friend

Invite your friends and family to get up to £80 off when they sign up for a monthly Three mobile contract phone, as well as £40 off with SIM only plans and mobile broadband. Grab everyone you know and start saving together!
£80 Off
3 uses today

Up to £80 off in cash rewards when you refer a friend

Invite your friends and family to get up to £80 off when they sign up for a monthly Three mobile contract phone, as well as £40 off with SIM only plans and mobile broadband. Grab everyone you know and start saving together!

50%
OFF
5 uses today

Student Discount: Free gift plus 50% off select plans for 6 months

Enjoy these Three mobile, tablet, and smart tech offers for students and score free gifts plus 50% off for the first 6 months!
50% Off
5 uses today

Student Discount: Free gift plus 50% off select plans for 6 months

Enjoy these Three mobile, tablet, and smart tech offers for students and score free gifts plus 50% off for the first 6 months!

FREE
GIFT
3 uses today

Free tablet with select phones with these Key Worker deals

Free Gift
3 uses today

Free tablet with select phones with these Key Worker deals

50%
OFF
4 uses today

10-50% off SIM Only plans for existing customers

Browse these SIM-only plans for savings up to 50% select Three offers
50% Off
4 uses today

10-50% off SIM Only plans for existing customers

Browse these SIM-only plans for savings up to 50% select Three offers

50%
OFF
1 use today

Up to 50% off and free gifts with the current spring offers

Get Deal
50% Off
1 use today

Up to 50% off and free gifts with the current spring offers

50%
OFF
6 uses today

50% off this unlimited data SIM on a 24 month advanced plan

Need unlimited data for less? Pay half-price for this Three plan with this special offer.
50% Off
6 uses today

50% off this unlimited data SIM on a 24 month advanced plan

Need unlimited data for less? Pay half-price for this Three plan with this special offer.

50%
OFF
3 uses today

6 months for half price on select SIM only plans with this special offer

Get Deal
50% Off
3 uses today

6 months for half price on select SIM only plans with this special offer

FREE
GIFT
1 use today

Big Tech Giveaway: Free Galaxy Buds, JBL speaker, or Beats headphones with select phones

Get Deal
Free Gift
1 use today

Big Tech Giveaway: Free Galaxy Buds, JBL speaker, or Beats headphones with select phones

50%
OFF
1 use today

50% off your first 6 months with a new Apple iPhone 12 Pro Max

Is it time for a new phone? Pick up a new Three iPhone 12 Pro Max and save 50% on your first 6 monthly bills.
Get Deal
50% Off
1 use today

50% off your first 6 months with a new Apple iPhone 12 Pro Max

Is it time for a new phone? Pick up a new Three iPhone 12 Pro Max and save 50% on your first 6 monthly bills.

£44
1 use today

Samsung Deal: Galaxy S20 FE with 100GB with an upfront cost of £29 for £44 per month

Grab the Samsung S20 FE at Three for £44 per month, with a £29 upfront fee. Enjoy unlimited data, and streaming and choose from a variety of colours!
£44
1 use today

Samsung Deal: Galaxy S20 FE with 100GB with an upfront cost of £29 for £44 per month

Grab the Samsung S20 FE at Three for £44 per month, with a £29 upfront fee. Enjoy unlimited data, and streaming and choose from a variety of colours!

FREE
UPGRADE
1 use today

200MB of free data every month with with free Data Reward SIM card

Get the Data Reward SIM free of charge at Three, and enjoy 200MB of data for free every month!
Free Upgrade
1 use today

200MB of free data every month with with free Data Reward SIM card

Get the Data Reward SIM free of charge at Three, and enjoy 200MB of data for free every month!

FROM
£17
1 use today

Unlimited 4G broadband from £17 per month with a two year contract

Enjoy Three unlimited data for as little as £17 monthly! Get a 4G hub and a 24-month contract for less.
From £17
1 use today

Unlimited 4G broadband from £17 per month with a two year contract

Enjoy Three unlimited data for as little as £17 monthly! Get a 4G hub and a 24-month contract for less.

FROM
£22
2 uses today

Fast broadband internet from £22 per month

Get fast and reliable broadband internet this season, with internet 4G from £22. Or get blazing Three 5G broadband from £29 this season. Find the latest deals and offers for internet and mobile.
From £22
2 uses today

Fast broadband internet from £22 per month

Get fast and reliable broadband internet this season, with internet 4G from £22. Or get blazing Three 5G broadband from £29 this season. Find the latest deals and offers for internet and mobile.

£34
1 use today

Samsung S21 Ultra: First 6 months 50% off at £34.50 per month

Get the new Samsung Galaxy S21 Ultra for half the price at £34.50 per month for the first 6 months
£34
1 use today

Samsung S21 Ultra: First 6 months 50% off at £34.50 per month

Get the new Samsung Galaxy S21 Ultra for half the price at £34.50 per month for the first 6 months

FROM
£29
1 use today

5G home broadband from £29 monthly

Get the fastest speeds for less! With these Three broadband and internet offers, enjoy unlimited 5G broadband for as low as £26 per month.
From £29
1 use today

5G home broadband from £29 monthly

Get the fastest speeds for less! With these Three broadband and internet offers, enjoy unlimited 5G broadband for as low as £26 per month.

FREE
SIM
1 use today

Free SIM with Pay As You Go mobile plans

Free SIM
1 use today

Free SIM with Pay As You Go mobile plans

TOP UP
1 use today

Top up your phone here

Three top up right here! Stay safe and do it from the comfort of your own home.
Top Up
1 use today

Top up your phone here

Three top up right here! Stay safe and do it from the comfort of your own home.

FREE
DELIVERY
1 use today

Free delivery on all your orders

Free Delivery
1 use today

Free delivery on all your orders

PRICE MATCH
1 use today

Best prices around with the Business Price Promise

Get the best Three UK deals around for your business. If you find a better contract deal with these select competitors, Three will be happy to price match it!
Price Match
1 use today

Best prices around with the Business Price Promise

Get the best Three UK deals around for your business. If you find a better contract deal with these select competitors, Three will be happy to price match it!

FREE
APP
1 use today

Download the app for free

Free App
1 use today

Download the app for free

Tons Of Easy Savings

Looking for an additional plan or device as an existing customer? They have plenty of awesome Three deals to help you out. Add an extra SIM or device to your existing account or complete a Three upgrade to a shiny new phone in just a few clicks by browsing their “Offers” page online. We’ll also post all of the best Three vouchers and upcoming Three sales right here so you don’t miss out!

If you’re a student on a tight budget, you’re in luck. With their exclusive Three discounts for students, you can get your next phone, SIM, or broadband purchase for less. Just enter your university email address to access a wide range of specials just for students. Whether you’re looking for a 1-month or 12-month SIM plan, they’re undoubtedly the best choice for you.

Downloading Discounts

With the Three app for iOS and Android, anything is possible. From tracking your latest bill and usage to completing your next Three top-up, in just a few taps, the whole world can be yours. Now you can manage your account on the move; some features include viewing your Pay As You Go credit balance, bill breakdowns, check your upgrade eligibility, and you can even browse the latest Three UK deals to see what’s new. Plus, if you need support from the Three contact team, live chat is always available for your convenience from your device.

Easy Deliveries

They always offer free, next working day delivery on all new purchases when you join! Enjoy this offer on phones, tablets, and MiFi that are ordered before 4 PM for delivery to your billing address. If you upgraded your phone online or over the phone, your new device will be delivered on their chosen date, and you will be charged £4.99 on your next bill— make sure you use a Three discount code or one of our Three voucher codes to save on this fee! If you’re still unsure about making the switch, just read a Three network review to see why customers choose them as their #1 network provider.

Popular Expired Three Discount Codes
50% Off
1 use today

Extra 50% off SIM Only plan with unlimited data fo the first 6 months

Save half price right now with this Three SIM Only offer!
50% Off
1 use today

5G home broadband from £15 monthly for the first 6 months (50% off)

£18
1 use today

100GB for £18 per month with this SIM Only Offer

Catch this Three SIM Only deal and get 100GB for £18!

FAQs with


How do you get the best discount at Three?

The best discounts, deals, and voucher codes can always be found right here at Quidco! You can also browse their exclusive customer offers page, join their mailing list for news about upcoming sales, and choose one of their plan bundles to cut down the cost of your next device!


Does Three do a student discount?

You don't have to sacrifice great cell service when you're on a tight student budget! With a valid academic ID, you can enjoy six months of service at half-price, as well as a free explorer backpack and wireless headphones. Just head to their website for more information on how to save!